\documentclass{article}
\usepackage{amssymb,amsmath,amscd,concmath}
\pagestyle{empty}
\begin{document}
\begin{equation*}f(x) = \frac{\int_{3}^{\infty}{2\beta}\frac{e^{-x^{2}-\Lambda}} x d\tau}\int^{\pi}_{-\infty}{\Phi_{x}\Phi_{j}d\rho}}{\sum{x_{i}x_{j}}\end{equation*}
\end{document}
